Harvest Moon Long Course Triathlon

Boulder Reservoir 5565 N 51st St, Boulder, CO, United States

The Harvest Moon Triathlon the 23rd edition of this event takes place at the beautiful Boulder Reservoir on September 10th, 2022.  Est. in 2000 this Colorado classic  provides the veterans […]

Waneka Classic Community 5K

Waneka Lake Park 1600 Caria Dr, Lafayette, CO, United States

A free, timed 5K, open to the public, held prior to the Centaurus Cross Country Invitational. Proceeds from the World Famous Concessions Stand and T-shirt sales benefit the Centaurus Cross […]

RexRun 5K for PAWSitivity

Arapahoe County Fairgrouds 25690 E Quincy Ave, Aurora, CO, United States

The RexRun 5K is a 5K run/walk to spread mental health awareness and #PAWSitivity in schools with the help of more Therapy K-9's like Arapahoe County Sheriff's Office K-9 Rex. This year's event is at Dove Valley Park in Centennial on August 6th.

$30 – $60

Lake Nighthorse Triathlon

Lake Nighthorse 1795 CR 210, Durango, CO, United States

Sprint Triathlon - 750 Meter Swim, 12.5 Mile Bike (road), 3.1 Mile Run

Desert’s Edge Triathlon

Imondi Wake Zone 1583 Cipolla Road, Fruita, CO, United States

Highline Lake State Park has been drained for 2024 to assist in the park's efforts to eradicate invasive zebra mussels. Therefore, the 2024 Desert's Edge triathlon series will take place […]

Firestorm 5K

Dakota Lodge - Ken Caryl Ranch 14422 W Ken Caryl Ave, Littleton, CO, United States

Wildfire Action Fund (WAF) is a non-profit organization committed to wildfire prevention, community education, and advocacy. The mission of the Firestorm 5k is to raise awareness about the importance of […]

Tater Trot 5K

Chapman Park 300 W Prospect Ave, Monte Vista, CO, United States

The Colorado Potato Festival will be kicking off at 8 AM on September 7th, 2024 at Chapman Park in Monte Vista with the annual Tater Trot 5K. This sponsored event […]

Imogene Pass Run

Ouray Ouray, CO, United States

The Imogene Pass Run (IPR) is a 17.1 mile point-to-point mountain race within the western San Juan mountains of Colorado. The course runs along a route which connects the towns […]

$60

Alberta Peak Challenge

Wolf Creek Ski Area US-160 E, Pagosa Springs, CO, United States

The Alberta Peak Challenge is a 4-mile and 12-mile trail race that starts and finishes at the base area of Wolf Creek Ski Area. The race course follows the gravel […]

$110

Canceled Blue Shoe Run 5K

The Urology Center of Colorado 2777 Mile High Stadium Circle, Denver, CO, United States

Run, Walk or Sit! For your father, your husband, your brother, your friend, or for you! Join The Urology Center of Colorado Foundation for the 12th Annual Blue Shoe Run for Prostate Cancer on Saturday, September 18, 2021 in Denver.

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